Events can be cretaceous.Logical formLearned from9 sentences. Reptiles can be cretaceous.Logical formLearned from9 sentences. A succession can be cretaceous.Logical formLearned from9 sentences. A cretaceous period may pertain-to a mesozoic era.Logical formLearned from8 sentences. A middle may pertain-to a cretaceous period.Logical formLearned from8 sentences. Sediments can be constituted-of-or-filled-with cretaceous age.Logical formLearned from8 sentences. A seawater can be cretaceous.Logical formLearned from8 sentences. A boundary can be cretaceous.Logical formLearned from8 sentences. A deposit can be cretaceous.Logical formLearned from8 sentences. An estuary can be in a cretaceous period.Logical formLearned from8 sentences. An unconformity can be cretaceous.Logical formLearned from8 sentences. Aquifers can be cretaceous.Logical formLearned from8 sentences. A climate can be cretaceous.Logical formLearned from7 sentences. Ecosystems can be cretaceous.Logical formLearned from7 sentences. An end may pertain-to a late cretaceous period.Logical formLearned from7 sentences.